I've pressure washed more carpets than I can count! It's AMAZING (and in some cases beyond disgusting!) what will come out of them... BLEAAHH!!!! Did one in a guys otherwise imacculate car (no names will be mentioned to protect the guilty!), and this putrid slimy pinkish crud oozed out of it that looked and reeked of vomit (anyone eating breakfast right now??
).
He swore nobody had ever yacked in his trunk, but....
I've pulled greek salad dressing, motor oil... you name it....
I usually wait for a nice hot day to do it, then hang it on the side of my truck cab (nice and tall) in the sun - it'll dry in a few hours.